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Joined: May 2007
Posts: 5,058 Likes: 5
Moderator-1A2, Cabling
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Moderator-1A2, Cabling
Joined: May 2007
Posts: 5,058 Likes: 5 |
OK. One at a time...
1. I don't think that's exactly correct, but I'll have to check.
2. A 401A requires an "A" lead to function. A 401B does not.
3. Dave is correct. A 415 is an automatic hotline card. You need an identical card at the far end. Pick up the line and the far end rings. Unless it has been (unofficially) modified it will only work over copper, not carrier.
4. A 403 card is an isolator to allow Music on Hold to be used on more then one line (otherwise you get cross talk). I'm not sure if it could be used in a 551, but I believe so.
A 551 has 18 pin card slots. Some cards (414 manual ring down for example) looked like they were the same size as a 400 but were actually 20 pin.
Sam
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